/*
  ==============================================================================

   This file is part of the JUCE framework.
   Copyright (c) Raw Material Software Limited

   JUCE is an open source framework subject to commercial or open source
   licensing.

   By downloading, installing, or using the JUCE framework, or combining the
   JUCE framework with any other source code, object code, content or any other
   copyrightable work, you agree to the terms of the JUCE End User Licence
   Agreement, and all incorporated terms including the JUCE Privacy Policy and
   the JUCE Website Terms of Service, as applicable, which will bind you. If you
   do not agree to the terms of these agreements, we will not license the JUCE
   framework to you, and you must discontinue the installation or download
   process and cease use of the JUCE framework.

   JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
   JUCE Privacy Policy: https://juce.com/juce-privacy-policy
   JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/

   Or:

   You may also use this code under the terms of the AGPLv3:
   https://www.gnu.org/licenses/agpl-3.0.en.html

   THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
   WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.

  ==============================================================================
*/

namespace juce
{

LookAndFeel_V1::LookAndFeel_V1()
{
    setColour (TextButton::buttonColourId,          Colour (0xffbbbbff));
    setColour (ListBox::outlineColourId,            findColour (ComboBox::outlineColourId));
    setColour (ScrollBar::thumbColourId,            Colour (0xffbbbbdd));
    setColour (ScrollBar::backgroundColourId,       Colours::transparentBlack);
    setColour (Slider::thumbColourId,               Colours::white);
    setColour (Slider::trackColourId,               Colour (0x7f000000));
    setColour (Slider::textBoxOutlineColourId,      Colours::grey);
    setColour (ProgressBar::backgroundColourId,     Colours::white.withAlpha (0.6f));
    setColour (ProgressBar::foregroundColourId,     Colours::green.withAlpha (0.7f));
    setColour (PopupMenu::backgroundColourId,             Colour (0xffeef5f8));
    setColour (PopupMenu::highlightedBackgroundColourId,  Colour (0xbfa4c2ce));
    setColour (PopupMenu::highlightedTextColourId,        Colours::black);
    setColour (TextEditor::focusedOutlineColourId,  findColour (TextButton::buttonColourId));

    scrollbarShadow.setShadowProperties (DropShadow (Colours::black.withAlpha (0.5f), 2, Point<int>()));
}

LookAndFeel_V1::~LookAndFeel_V1()
{
}

//==============================================================================
void LookAndFeel_V1::drawButtonBackground (Graphics& g, Button& button, const Colour& backgroundColour,
                                           bool shouldDrawButtonAsHighlighted, bool shouldDrawButtonAsDown)
{
    const int width = button.getWidth();
    const int height = button.getHeight();

    const float indent = 2.0f;
    const int cornerSize = jmin (roundToInt ((float) width * 0.4f),
                                 roundToInt ((float) height * 0.4f));

    Path p;
    p.addRoundedRectangle (indent, indent,
                           (float) width - indent * 2.0f,
                           (float) height - indent * 2.0f,
                           (float) cornerSize);

    Colour bc (backgroundColour.withMultipliedSaturation (0.3f));

    if (shouldDrawButtonAsHighlighted)
    {
        if (shouldDrawButtonAsDown)
            bc = bc.brighter();
        else if (bc.getBrightness() > 0.5f)
            bc = bc.darker (0.1f);
        else
            bc = bc.brighter (0.1f);
    }

    g.setColour (bc);
    g.fillPath (p);

    g.setColour (bc.contrasting().withAlpha ((shouldDrawButtonAsHighlighted) ? 0.6f : 0.4f));
    g.strokePath (p, PathStrokeType ((shouldDrawButtonAsHighlighted) ? 2.0f : 1.4f));
}

void LookAndFeel_V1::drawTickBox (Graphics& g, Component& /*component*/,
                                  float x, float y, float w, float h,
                                  const bool ticked,
                                  const bool isEnabled,
                                  const bool /*shouldDrawButtonAsHighlighted*/,
                                  const bool shouldDrawButtonAsDown)
{
    Path box;
    box.addRoundedRectangle (0.0f, 2.0f, 6.0f, 6.0f, 1.0f);

    g.setColour (isEnabled ? Colours::blue.withAlpha (shouldDrawButtonAsDown ? 0.3f : 0.1f)
                           : Colours::lightgrey.withAlpha (0.1f));

    AffineTransform trans (AffineTransform::scale (w / 9.0f, h / 9.0f).translated (x, y));

    g.fillPath (box, trans);

    g.setColour (Colours::black.withAlpha (0.6f));
    g.strokePath (box, PathStrokeType (0.9f), trans);

    if (ticked)
    {
        Path tick;
        tick.startNewSubPath (1.5f, 3.0f);
        tick.lineTo (3.0f, 6.0f);
        tick.lineTo (6.0f, 0.0f);

        g.setColour (isEnabled ? Colours::black : Colours::grey);
        g.strokePath (tick, PathStrokeType (2.5f), trans);
    }
}

void LookAndFeel_V1::drawToggleButton (Graphics& g, ToggleButton& button, bool shouldDrawButtonAsHighlighted, bool shouldDrawButtonAsDown)
{
    if (button.hasKeyboardFocus (true))
    {
        g.setColour (button.findColour (TextEditor::focusedOutlineColourId));
        g.drawRect (0, 0, button.getWidth(), button.getHeight());
    }

    const int tickWidth = jmin (20, button.getHeight() - 4);

    drawTickBox (g, button, 4.0f, (float) (button.getHeight() - tickWidth) * 0.5f,
                 (float) tickWidth, (float) tickWidth,
                 button.getToggleState(),
                 button.isEnabled(),
                 shouldDrawButtonAsHighlighted,
                 shouldDrawButtonAsDown);

    g.setColour (button.findColour (ToggleButton::textColourId));
    g.setFont (jmin (15.0f, (float) button.getHeight() * 0.6f));

    if (! button.isEnabled())
        g.setOpacity (0.5f);

    const int textX = tickWidth + 5;

    g.drawFittedText (button.getButtonText(),
                      textX, 4,
                      button.getWidth() - textX - 2, button.getHeight() - 8,
                      Justification::centredLeft, 10);
}

void LookAndFeel_V1::drawProgressBar (Graphics& g, ProgressBar& progressBar,
                                      int width, int height,
                                      double progress, const String& textToShow)
{
    if (progress < 0 || progress >= 1.0)
    {
        LookAndFeel_V2::drawProgressBar (g, progressBar, width, height, progress, textToShow);
    }
    else
    {
        const Colour background (progressBar.findColour (ProgressBar::backgroundColourId));
        const Colour foreground (progressBar.findColour (ProgressBar::foregroundColourId));

        g.fillAll (background);
        g.setColour (foreground);

        g.fillRect (1, 1,
                    jlimit (0, width - 2, roundToInt (progress * (width - 2))),
                    height - 2);

        if (textToShow.isNotEmpty())
        {
            g.setColour (Colour::contrasting (background, foreground));
            g.setFont ((float) height * 0.6f);

            g.drawText (textToShow, 0, 0, width, height, Justification::centred, false);
        }
    }
}

void LookAndFeel_V1::drawScrollbarButton (Graphics& g, ScrollBar& bar,
                                          int width, int height, int buttonDirection,
                                          bool isScrollbarVertical,
                                          bool shouldDrawButtonAsHighlighted,
                                          bool shouldDrawButtonAsDown)
{
    if (isScrollbarVertical)
        width -= 2;
    else
        height -= 2;

    Path p;

    const auto w = (float) width;
    const auto h = (float) height;

    if (buttonDirection == 0)
        p.addTriangle (w * 0.5f, h * 0.2f,
                       w * 0.1f, h * 0.7f,
                       w * 0.9f, h * 0.7f);
    else if (buttonDirection == 1)
        p.addTriangle (w * 0.8f, h * 0.5f,
                       w * 0.3f, h * 0.1f,
                       w * 0.3f, h * 0.9f);
    else if (buttonDirection == 2)
        p.addTriangle (w * 0.5f, h * 0.8f,
                       w * 0.1f, h * 0.3f,
                       w * 0.9f, h * 0.3f);
    else if (buttonDirection == 3)
        p.addTriangle (w * 0.2f, h * 0.5f,
                       w * 0.7f, h * 0.1f,
                       w * 0.7f, h * 0.9f);

    if (shouldDrawButtonAsDown)
        g.setColour (Colours::white);
    else if (shouldDrawButtonAsHighlighted)
        g.setColour (Colours::white.withAlpha (0.7f));
    else
        g.setColour (bar.findColour (ScrollBar::thumbColourId).withAlpha (0.5f));

    g.fillPath (p);

    g.setColour (Colours::black.withAlpha (0.5f));
    g.strokePath (p, PathStrokeType (0.5f));
}

void LookAndFeel_V1::drawScrollbar (Graphics& g, ScrollBar& bar,
                                    int x, int y, int width, int height,
                                    bool isScrollbarVertical, int thumbStartPosition, int thumbSize,
                                    bool isMouseOver, bool isMouseDown)
{
    g.fillAll (bar.findColour (ScrollBar::backgroundColourId));

    g.setColour (bar.findColour (ScrollBar::thumbColourId)
                    .withAlpha ((isMouseOver || isMouseDown) ? 0.4f : 0.15f));

    if ((float) thumbSize > 0.0f)
    {
        Rectangle<int> thumb;

        if (isScrollbarVertical)
        {
            width -= 2;
            g.fillRect (x + roundToInt ((float) width * 0.35f), y,
                        roundToInt ((float) width * 0.3f), height);

            thumb.setBounds (x + 1, thumbStartPosition,
                             width - 2, thumbSize);
        }
        else
        {
            height -= 2;
            g.fillRect (x, y + roundToInt ((float) height * 0.35f),
                        width, roundToInt ((float) height * 0.3f));

            thumb.setBounds (thumbStartPosition, y + 1,
                             thumbSize, height - 2);
        }

        g.setColour (bar.findColour (ScrollBar::thumbColourId)
                        .withAlpha ((isMouseOver || isMouseDown) ? 0.95f : 0.7f));

        g.fillRect (thumb);

        g.setColour (Colours::black.withAlpha ((isMouseOver || isMouseDown) ? 0.4f : 0.25f));
        g.drawRect (thumb.getX(), thumb.getY(), thumb.getWidth(), thumb.getHeight());

        if (thumbSize > 16)
        {
            for (int i = 3; --i >= 0;)
            {
                const float linePos = (float) thumbStartPosition + (float) thumbSize * 0.5f + (float) (i - 1) * 4.0f;
                g.setColour (Colours::black.withAlpha (0.15f));

                if (isScrollbarVertical)
                {
                    g.drawLine ((float) x + (float) width * 0.2f, linePos, (float) width * 0.8f, linePos);
                    g.setColour (Colours::white.withAlpha (0.15f));
                    g.drawLine ((float) width * 0.2f, linePos - 1.0f, (float) width * 0.8f, linePos - 1.0f);
                }
                else
                {
                    g.drawLine (linePos, (float) height * 0.2f, linePos, (float) height * 0.8f);
                    g.setColour (Colours::white.withAlpha (0.15f));
                    g.drawLine (linePos - 1.0f, (float) height * 0.2f, linePos - 1.0f, (float) height * 0.8f);
                }
            }
        }
    }
}

ImageEffectFilter* LookAndFeel_V1::getScrollbarEffect()
{
    return &scrollbarShadow;
}


//==============================================================================
void LookAndFeel_V1::drawPopupMenuBackground (Graphics& g, int width, int height)
{
    g.fillAll (findColour (PopupMenu::backgroundColourId));

    g.setColour (Colours::black.withAlpha (0.6f));
    g.drawRect (0, 0, width, height);
}

void LookAndFeel_V1::drawMenuBarBackground (Graphics& g, int /*width*/, int /*height*/, bool, MenuBarComponent& menuBar)
{
    g.fillAll (menuBar.findColour (PopupMenu::backgroundColourId));
}


//==============================================================================
void LookAndFeel_V1::drawTextEditorOutline (Graphics& g, int width, int height, TextEditor& textEditor)
{
    if (textEditor.isEnabled())
    {
        g.setColour (textEditor.findColour (TextEditor::outlineColourId));
        g.drawRect (0, 0, width, height);
    }
}

//==============================================================================
void LookAndFeel_V1::drawComboBox (Graphics& g, int width, int height,
                                   const bool isButtonDown,
                                   int buttonX, int buttonY, int buttonW, int buttonH,
                                   ComboBox& box)
{
    g.fillAll (box.findColour (ComboBox::backgroundColourId));

    g.setColour (box.findColour ((isButtonDown) ? ComboBox::buttonColourId
                                                : ComboBox::backgroundColourId));
    g.fillRect (buttonX, buttonY, buttonW, buttonH);

    g.setColour (box.findColour (ComboBox::outlineColourId));
    g.drawRect (0, 0, width, height);

    const float arrowX = 0.2f;
    const float arrowH = 0.3f;

    const auto x = (float) buttonX;
    const auto y = (float) buttonY;
    const auto w = (float) buttonW;
    const auto h = (float) buttonH;

    if (box.isEnabled())
    {
        Path p;
        p.addTriangle (x + w * 0.5f,            y + h * (0.45f - arrowH),
                       x + w * (1.0f - arrowX), y + h * 0.45f,
                       x + w * arrowX,          y + h * 0.45f);

        p.addTriangle (x + w * 0.5f,            y + h * (0.55f + arrowH),
                       x + w * (1.0f - arrowX), y + h * 0.55f,
                       x + w * arrowX,          y + h * 0.55f);

        g.setColour (box.findColour ((isButtonDown) ? ComboBox::backgroundColourId
                                                    : ComboBox::buttonColourId));
        g.fillPath (p);
    }
}

Font LookAndFeel_V1::getComboBoxFont (ComboBox& box)
{
    Font f (withDefaultMetrics (FontOptions { jmin (15.0f, (float) box.getHeight() * 0.85f) }));
    f.setHorizontalScale (0.9f);
    return f;
}

//==============================================================================
static void drawTriangle (Graphics& g, float x1, float y1, float x2, float y2, float x3, float y3, Colour fill, Colour outline)
{
    Path p;
    p.addTriangle (x1, y1, x2, y2, x3, y3);
    g.setColour (fill);
    g.fillPath (p);

    g.setColour (outline);
    g.strokePath (p, PathStrokeType (0.3f));
}

void LookAndFeel_V1::drawLinearSlider (Graphics& g,
                                       int x, int y, int w, int h,
                                       float sliderPos, float minSliderPos, float maxSliderPos,
                                       const Slider::SliderStyle style,
                                       Slider& slider)
{
    g.fillAll (slider.findColour (Slider::backgroundColourId));

    if (style == Slider::LinearBar)
    {
        g.setColour (slider.findColour (Slider::thumbColourId));
        g.fillRect (x, y, (int) sliderPos - x, h);

        g.setColour (slider.findColour (Slider::textBoxTextColourId).withMultipliedAlpha (0.5f));
        g.drawRect (x, y, (int) sliderPos - x, h);
    }
    else
    {
        g.setColour (slider.findColour (Slider::trackColourId)
                           .withMultipliedAlpha (slider.isEnabled() ? 1.0f : 0.3f));

        if (slider.isHorizontal())
        {
            g.fillRect (x, y + roundToInt ((float) h * 0.6f),
                        w, roundToInt ((float) h * 0.2f));
        }
        else
        {
            g.fillRect (x + roundToInt ((float) w * 0.5f - jmin (3.0f, (float) w * 0.1f)), y,
                        jmin (4, roundToInt ((float) w * 0.2f)), h);
        }

        float alpha = 0.35f;

        if (slider.isEnabled())
            alpha = slider.isMouseOverOrDragging() ? 1.0f : 0.7f;

        const Colour fill (slider.findColour (Slider::thumbColourId).withAlpha (alpha));
        const Colour outline (Colours::black.withAlpha (slider.isEnabled() ? 0.7f : 0.35f));

        if (style == Slider::TwoValueVertical || style == Slider::ThreeValueVertical)
        {
            drawTriangle (g,
                          (float) x + (float) w * 0.5f + jmin (4.0f, (float) w * 0.3f), minSliderPos,
                          (float) x + (float) w * 0.5f - jmin (8.0f, (float) w * 0.4f), minSliderPos - 7.0f,
                          (float) x + (float) w * 0.5f - jmin (8.0f, (float) w * 0.4f), minSliderPos,
                          fill, outline);

            drawTriangle (g,
                          (float) x + (float) w * 0.5f + jmin (4.0f, (float) w * 0.3f), maxSliderPos,
                          (float) x + (float) w * 0.5f - jmin (8.0f, (float) w * 0.4f), maxSliderPos,
                          (float) x + (float) w * 0.5f - jmin (8.0f, (float) w * 0.4f), maxSliderPos + 7.0f,
                          fill, outline);
        }
        else if (style == Slider::TwoValueHorizontal || style == Slider::ThreeValueHorizontal)
        {
            drawTriangle (g,
                          minSliderPos, (float) y + (float) h * 0.6f - jmin (4.0f, (float) h * 0.3f),
                          minSliderPos - 7.0f, (float) y + (float) h * 0.9f,
                          minSliderPos, (float) y + (float) h * 0.9f,
                          fill, outline);

            drawTriangle (g,
                          maxSliderPos, (float) y + (float) h * 0.6f - jmin (4.0f, (float) h * 0.3f),
                          maxSliderPos, (float) y + (float) h * 0.9f,
                          maxSliderPos + 7.0f, (float) y + (float) h * 0.9f,
                          fill, outline);
        }

        if (style == Slider::LinearHorizontal || style == Slider::ThreeValueHorizontal)
        {
            drawTriangle (g,
                          sliderPos, (float) y + (float) h * 0.9f,
                          sliderPos - 7.0f, (float) y + (float) h * 0.2f,
                          sliderPos + 7.0f, (float) y + (float) h * 0.2f,
                          fill, outline);
        }
        else if (style == Slider::LinearVertical || style == Slider::ThreeValueVertical)
        {
            drawTriangle (g,
                          (float) x + (float) w * 0.5f - jmin (4.0f, (float) w * 0.3f), sliderPos,
                          (float) x + (float) w * 0.5f + jmin (8.0f, (float) w * 0.4f), sliderPos - 7.0f,
                          (float) x + (float) w * 0.5f + jmin (8.0f, (float) w * 0.4f), sliderPos + 7.0f,
                          fill, outline);
        }
    }

    if (slider.isBar())
        drawLinearSliderOutline (g, x, y, w, h, style, slider);
}

Button* LookAndFeel_V1::createSliderButton (Slider&, const bool isIncrement)
{
    if (isIncrement)
        return new ArrowButton ("u", 0.75f, Colours::white.withAlpha (0.8f));

    return new ArrowButton ("d", 0.25f, Colours::white.withAlpha (0.8f));
}

ImageEffectFilter* LookAndFeel_V1::getSliderEffect (Slider&)
{
    return &scrollbarShadow;
}

int LookAndFeel_V1::getSliderThumbRadius (Slider&)
{
    return 8;
}

//==============================================================================
void LookAndFeel_V1::drawCornerResizer (Graphics& g, int w, int h, bool isMouseOver, bool isMouseDragging)
{
    g.setColour ((isMouseOver || isMouseDragging) ? Colours::lightgrey
                                                  : Colours::darkgrey);

    const float lineThickness = (float) jmin (w, h) * 0.1f;

    for (float i = 0.0f; i < 1.0f; i += 0.3f)
    {
        g.drawLine ((float) w * i,
                    (float) h + 1.0f,
                    (float) w + 1.0f,
                    (float) h * i,
                    lineThickness);
    }
}

//==============================================================================
Button* LookAndFeel_V1::createDocumentWindowButton (int buttonType)
{
    Path shape;

    if (buttonType == DocumentWindow::closeButton)
    {
        shape.addLineSegment (Line<float> (0.0f, 0.0f, 1.0f, 1.0f), 0.35f);
        shape.addLineSegment (Line<float> (1.0f, 0.0f, 0.0f, 1.0f), 0.35f);

        ShapeButton* const b = new ShapeButton ("close",
                                                Colour (0x7fff3333),
                                                Colour (0xd7ff3333),
                                                Colour (0xf7ff3333));

        b->setShape (shape, true, true, true);
        return b;
    }
    else if (buttonType == DocumentWindow::minimiseButton)
    {
        shape.addLineSegment (Line<float> (0.0f, 0.5f, 1.0f, 0.5f), 0.25f);

        DrawableButton* b = new DrawableButton ("minimise", DrawableButton::ImageFitted);
        DrawablePath dp;
        dp.setPath (shape);
        dp.setFill (Colours::black.withAlpha (0.3f));
        b->setImages (&dp);
        return b;
    }
    else if (buttonType == DocumentWindow::maximiseButton)
    {
        shape.addLineSegment (Line<float> (0.5f, 0.0f, 0.5f, 1.0f), 0.25f);
        shape.addLineSegment (Line<float> (0.0f, 0.5f, 1.0f, 0.5f), 0.25f);

        DrawableButton* b = new DrawableButton ("maximise", DrawableButton::ImageFitted);
        DrawablePath dp;
        dp.setPath (shape);
        dp.setFill (Colours::black.withAlpha (0.3f));
        b->setImages (&dp);
        return b;
    }

    jassertfalse;
    return nullptr;
}

void LookAndFeel_V1::positionDocumentWindowButtons (DocumentWindow&,
                                                    int titleBarX, int titleBarY, int titleBarW, int titleBarH,
                                                    Button* minimiseButton,
                                                    Button* maximiseButton,
                                                    Button* closeButton,
                                                    bool positionTitleBarButtonsOnLeft)
{
    titleBarY += titleBarH / 8;
    titleBarH -= titleBarH / 4;

    const int buttonW = titleBarH;

    int x = positionTitleBarButtonsOnLeft ? titleBarX + 4
                                          : titleBarX + titleBarW - buttonW - 4;

    if (closeButton != nullptr)
    {
        closeButton->setBounds (x, titleBarY, buttonW, titleBarH);
        x += positionTitleBarButtonsOnLeft ? buttonW + buttonW / 5
                                           : -(buttonW + buttonW / 5);
    }

    if (positionTitleBarButtonsOnLeft)
        std::swap (minimiseButton, maximiseButton);

    if (maximiseButton != nullptr)
    {
        maximiseButton->setBounds (x, titleBarY - 2, buttonW, titleBarH);
        x += positionTitleBarButtonsOnLeft ? buttonW : -buttonW;
    }

    if (minimiseButton != nullptr)
        minimiseButton->setBounds (x, titleBarY - 2, buttonW, titleBarH);
}

} // namespace juce
